Patient Model 250 Watt Heating Element Stationary Base Features Ceramic Heaters That Change Color From Coral To Gray When Energized Nickel-chromium Resistance Wire Embedded In Ceramic Casting Provides Uniform Heat Transmission 96% Thermal Efficiency With Low Element Surface Temperature Inner Body Of The Element Is Filled With Ceramic Fiber Insulation Which Conserves Energy Maximizes Efficiency And Minimizes Heat Build-up At The Terminal Area Heat-up Time Is 3-9 Minutes To Reach 90% Of Maximum Temperature Height Adjusts 35 To 58 250 Watt Lamp Recommended For Those Patients Requiring Supplementary Heat Treatments At Home 12 Flexible Arm 3-conductor Cord Set 250w Ceramic Heater And Protective Screen Shipping Dimensions: 12 X 32 X 8